Optional catalytic reactor purifier
A technology of purification device and catalytic converter, which is applied in the field of catalytic converters, can solve the problems of component durability risk, cost control, fuel consumption, performance failure and loss, etc., so as to reduce back pressure, reduce fuel consumption and reduce power loss effect
Inactive Publication Date: 2008-08-27
CHERY AUTOMOBILE CO LTD
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Problems solved by technology
[0002] At present, most of the post-treatment systems designed for Euro 3, Euro 4 or even higher gasoline engine vehicle exhaust emission standards are close-coupled three-way catalytic converters or steel pipe welded exhaust manifolds coupled with three-way catalytic converters, and there are also secondary The method of air system plus chassis-type three-way catalytic converter, but these methods are not optimal in terms of cost control, fuel consumption, and performance. More or less, some factors need to be lost to achieve the goal, and in the parts. There is a greater risk in durability
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[0013] 1 to 2, according to a preferred embodiment of the present invention: the present invention includes a main channel 5, a main catalytic converter 3, a bypass channel 4, a bypass pipeline catalytic converter 2 and a pipeline selection control system 1. The pipeline selection control system 1 may be that the ECU electronic control unit directly controls the valve 7 through a motor, or the ECU electronic control unit controls the valve 7 through a solenoid valve, a vacuum valve, or an actuator.
[0014] At cold start, the bypass channel 4 is opened by the ECU electronic control unit, and the main channel 5 is closed. The exhaust gas flow 6 will all enter the bypass metal carrier catalyst 2. At this time, the bypass catalyst 2 is equivalent to a close-coupled catalyst, which can quickly light up the catalyst and reduce the emission of pollutants. The exhaust back pressure of the metal carrier is more than 30% smaller than that of the ceramic carrier, which can improve the p...
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The invention relates to a selectable catalyst purifier, comprising a main channel, a main catalyst, a side channel arranged at the front end of the main catalyst, a bypass pipeline type catalyst and a pipeline selecting control system, wherein, the pipeline selecting control system can be an ECU which controls a valve directly by a motor or an electromagnetic valve, a vacuum valve and an actuating mechanism. The trend of the air stream is controlled by the pipeline selecting control system to adjust the working condition. The adoption of the design can not only reduce the contaminant discharge amount when the purifier is started but also decrease the fuel quantity of consumption; therefore, both of the vehicle exhaust requirement with high standard and the fuel quantity of consumption requirement with high standard can be satisfied.
Description
【Technical field】 [0001] The invention relates to a catalytic converter, in particular to a technology for controlling the emission of a selective catalytic converter. 【Background technique】 [0002] At present, most of the post-treatment systems designed for Euro 3, Euro 4 or even higher gasoline engine vehicle exhaust emission standards are close-coupled three-way catalytic converters or steel pipe welded exhaust manifolds coupled with three-way catalytic converters, and there are also secondary The method of air system plus chassis-type three-way catalytic converter, but these methods are not optimal in terms of cost control, fuel consumption, and performance. More or less, some factors need to be lost to achieve the goal, and in the parts. There is a greater risk in durability. How to combine the advantages of fast light-off of the close-coupled catalytic converter with the advantages of low back pressure, good fuel economy and good durability of the chassis-type cataly...
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IPC IPC(8): F01N3/28B01D53/94
CPCY02A50/20
Inventor 汪旻浩周剑明张建波
Owner CHERY AUTOMOBILE CO LTD